pillar

Definitions

General English

Cars & Driving

  • noun a post between the roof and the waistline; from front to rear, there are A-, B-, C-, and D-pillars

Construction

  • A post or column that supports part of a structure.
  • A column of ore left in a mine to support the ground overhead.

Medical

  • noun a part that is long and thin

Real Estate

  • noun a vertical column that is part of a building or other structure and can be either a support or decoration
http://www.dictionarycentral.com/definition/pillar.html